Porsche offering rev-matching system in manual C4S

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Link to the Article by Motor Authority

There is a simple joy in a properly rev-matched manual gearbox downshift that’s near impossible to describe. For a brief moment in time, years of practice blend muscle memory, mechanical motion and precision timing to yield perfect harmony between man and machine.

Some manual-transmission drivers will never achieve this state of auto-zen, content to row their own gears without upping their game, or daunted by the challenge of the rev-matching sequence. Worse, others will take the paddle-shifted path to Nirvana, which requires only the spending of money and not the perfection of timing.

There’s a third option, too, previously delivered by Nissan on manual transmission 370Z models equipped with the $3,030 Sport Package. Called SynchroRev Match, the feature allows drivers to downshift with confidence, as the engine automatically raises speed to match the lower gear selected (within the engine’s redline limit, of course).

The result is perfectly executed downshifts, without going though all the trouble of learning heel-toe driving and rev-matching on your own. For purists, the system adds nothing but expense, and our personal preference is to drive with SynchroRev Match off when Nissan tosses us the keys to a manual transmission 370Z.

As Car and Driver reports, Porsche is getting on the the action, too. Its latest 911 Carrera 4 models will offer “automatic double-declutching” during downshifts on cars equipped with the seven-speed manual gearbox and the Sport Chrono package.

Unlike Nissan’s system, which can be driver-deactivated at the touch of a button, Porsche’s system is always active when the car is in Sport Plus mode (though it remains off in Normal and Sport modes). In other words, the new 911 Carrera 4 doesn’t care how good a driver you are, it thinks it can handle things more proficiently.

We don’t really see that as a step forward, and making things worse, the technology is expected to trickle down to other 911 models. Eventually, it will find its way into the Boxster and Cayman as well, perhaps driving yet another nail in the coffin of the manual-transmission driving experience.
 
I don't have an issue with automatic rev matching.

I do feel a little uneasy that you can't switch it off. I can't heel/toe, but I'd like to think its a skill I want to develop and that being the case, I'd prefer not to have a machine do it for me. May as well go dual-clutch if that's the case, and at least be able to plop it into "auto" in traffic...
 
So one of the most driver-oriented companies in the world is making their cars less driver friendly? I hate to say this, but I don't think it will be long until all supercars are like the McLaren MP4-blah blah blah. Honestly, whatever happened to letting people drive their cars? See avatar.
 
So one of the most driver-oriented companies in the world is making their cars less driver friendly? I hate to say this, but I don't think it will be long until all supercars are like the McLaren MP4-blah blah blah. Honestly, whatever happened to letting people drive their cars? See avatar.
When rivaling car manufactures start to create cars that are speed focused (i.e. going around a track as quickly as possible), it only makes sense that you do the same. Granted, it might be less involving in the sense that it's one less thing to do, but that hasn't stopped people buying cars with DSG gearboxes.
 
How can this be solved? Porschedoppelkupplungsgetriebe.
 
Wait, "automatic double-declutching"? That sounds more like "push-the-shifter-somewhere-and-we'll-do-the-clutch-and-rev-match"
 
When rivaling car manufactures start to create cars that are speed focused (i.e. going around a track as quickly as possible), it only makes sense that you do the same. Granted, it might be less involving in the sense that it's one less thing to do, but that hasn't stopped people buying cars with DSG gearboxes.

Yes, but surely they could let those of us who want to shift for ourselves on the track?
 
I do feel a little uneasy that you can't switch it off. I can't heel/toe, but I'd like to think its a skill I want to develop and that being the case, I'd prefer not to have a machine do it for me. May as well go dual-clutch if that's the case, and at least be able to plop it into "auto" in traffic...
It's bizzare that Porsche won't let you turn it off in sport+ mode :odd:. Idiosynchratic Germans... Heel/toeing yourself is ten times more fun than letting the computer do it. I only turn the Synchro-Rev on in my Z when people ask to see what it does. Honestly, it feels un-natural (though it is perfect at what it does).
 
Perhaps the only difference is that Sport-plus uses the rev matching.


It's bizzare that Porsche won't let you turn it off in sport+ mode :odd:. Idiosynchratic Germans... Heel/toeing yourself is ten times more fun than letting the computer do it. I only turn the Synchro-Rev on in my Z when people ask to see what it does. Honestly, it feels un-natural (though it is perfect at what it does).

I've wondered, will that let you do such things as flat-foot shift (never lifting off the throttle) and even clutchless shift? The latter would need to be done slowly I'm sure, but if its matching exactly, you really shouldn't need the clutch to select the next gear up/down.
 
Im a novice with manual Transmissions but still manage to match properly (most of the time). :p
This sort of tech is great. Id like to turn it off but if it works well Im sure itwill be easier on the driver, that means more attention to gas brake and steering. However, this all makes me wonder why they put a clutch in the the car in the first place. :lol:
 
However, this all makes me wonder why they put a clutch in the the car in the first place. :lol:

That's kind of the thing... I've nothing against the rev-matching technology, it's pretty impressive, but the whole point of a manual gearbox is the interaction between gas, lever and clutch. And since you arguably have the most interaction going down the box (since synchro rings have taken much of the technique out of up-changes), I think auto rev-matching is the point where I'd think "actually, I may as well go for PDK now - it's quicker, makes me feel like a racing driver, and when I'm stuck in traffic I can knock it into 'D' and relax"...
 
I've wondered, will that let you do such things as flat-foot shift (never lifting off the throttle) and even clutchless shift? The latter would need to be done slowly I'm sure, but if its matching exactly, you really shouldn't need the clutch to select the next gear up/down.
In theory, I suppose it would...I'm not willing to try it, though :lol:. There are sensors on the gearshift to detect which gear is being selected. I'm not sure if there is also a sensor on the clutch pedal. If there is, you could easily 🤬 the transmission trying to clutchless-shift at incorrect RPM's.
 
Well, you can pull the car out of gear without the clutch when its not under load. I guess it depends how far you need to move the shifter into another gate to trip the sensor.
 
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